Everymile Wobble Balance Board, Exercise Balance Stability Trainer Portable Balance Board with Handle for Workout Core Trainer Physical Therapy Gym 15.7" Diameter No-Skid Surface Durable & No-Skid Surface: Made of durable and high quality plastic, features tear-resistant and waterproof material, and constructed carefully to last a long-term use. Non-skidding surface ensures a stable good balance, grip and stability while exercising. 15.75 inch diameter large enough for both feet. Support up to 300 lbs Great Trainer for Balance Training: Designed to enhance coordination, sense of balance, strengthen the targeted muscles, ligaments, tendons and joints, recover from injury, as well as to improves core strength posture. Could be used for various purpose of training, which makes it a necessary tool for indoor or outdoor exercise equipment. 360 Rotation and 15 Tilting Angle: Allows 360 rotation and approximately 15 tilting angle, suitable for exercise from side to side, front to back, stretch and circular drills. Calorie Burner Helper: Most workers sit at the office for a long time and state they have no time to go to the gym, which is bad for their long-term health. These wobble boards are perfect for use in the office. What you need to do is just to stand on it, and try your best to keep your balance. Seems like a non-exercise activity, while this helps you burn calories like running. Portable Design &Perfect WarrantyWith handle, convenient to take outdoor or to office. 2-year warranty and 30-day refund, If our products dont live up to your expectation, feel free to contact our customers service and well resolve your issue